Refrigerant Charge Fault Detection and Diagnosis Algorithm for Water-to-Water Heat Pump Unit
- Authors
- 이광호
- Issue Date
- 2월-2019
- Publisher
- MDPI
- Citation
- ENERGIES, v.12, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGIES
- Volume
- 12
- Number
- 3
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/139697
- ISSN
- 19961073
- Abstract
- Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of +/- 4.5% and +/- 1.1% in cooling mode and heating mode respectively.
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Collections - College of Engineering > Department of Architecture > 1. Journal Articles
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